Energy Flow Latin Word Meanings Word Part Meaning

Energy Flow

Latin Word Meanings Word Part Meaning Auto- Self Carn- Flesh Hetero- Different Herb- Plants -troph Nutrition/feedi ng habits Omni- All/every -vore To eat Detri- Rub off/break down

Autotrophs & Heterotrophs • An autotroph is an organism that collects energy from the sun in order to produce food. Autotrophs may also be called producers • Heterotrophs obtain their energy from consuming other organisms. Also called consumers.

Classification for Obtaining Energy Definition Herbivore A heterotroph that eats only plants Carnivore A heterotroph that preys on other heterotrophs Omnivore A heterotroph that eats both plants and animals Detritivore An organism that eats dead or decaying matter to return nutrients into the system to be reused by other organisms

Food Chain Model showing how energy flows through an ecosystem. Somewhat brief demonstrations of how energy travels but does not account for the continuous energy cycling that actually occurs.

Food Web Model representing the many interconnected pathways in which energy flows through a group of organisms

Trophic Levels • Each step in a food chain or food web is called a trophic level • Autotrophs make up the first level • Heterotrophs make up the remaining levels – Herbivores – Primary carnivores – Secondary carnivores – Tertiary carnivores